493 / 1481
PTV
PTV
GTV
CTV
GTV
CTV
Fang et al.
IJROBP
2001;50:961-9.
Barker et al.
IJROBP
2004;59:960-70.
Yang et al.
IJROBP
2011;79:1096-103.
Height et al
. J Med Imaging Radiat Oncol
2010;54:497-504.
GTV (CT) volume changes during treatment
Reference
Radiotherapy
technique
Per-treatment
imaging time
Δ per-treatment volume/
pretreatment volume
Fang 2001 2DRT/3DCRT
Week 5 GTV-T: -62%
GTV-N: -76%
Barker 2004 2DRT/3DCRT/IMRT
3/week
GTV-T: -1.7%/day
GTV-N: -1.7%/day
Yang 2010
IMRT
Week 4-5 GTV
sum
:-36-47%
Height 2010
IMRT
Week 5 GTV-T: -50%
GTV-N: -74%